How to make oscillator circuit for 220V inverter?

Описание: In electronic circuits, the presence of signals causes the circuit to work. Therefore, it is very necessary to detect the signals and control them in the circuit

In inverter circuits, we need an oscillator to turn on the circuit. We can create oscillator with the help of coil and transistor. In this type of oscillators, the coil and type of transistor and the amount of voltage play an important role in the oscillation of the circuit, so it can be said that we have almost less control over the oscillation of the circuit.
So it is necessary to design a circuit that we have more control over. We can easily make oscillators with IC, but the circuit we design ourselves will be more fun. By changing the values, we can also determine the amount of fluctuation. There are many ICs that generate frequencies, among the most famous ones we can name IC 555, TL494 and sg3525.
Of course, the number of these ICs is large. In this video, we design an oscillator circuit with the help of two C1815 transistors, two 18 nano farad polyester capacitors, and four resistors.
By changing the value of the capacitors, we can determine the frequency of the circuit. In this video I used 12 volts. By changing the value of resistors, more voltages can be used.
To implement the 220V power inverter circuit, we need a transformer and a switching transistor. I used 13009 transistor and computer power supply transformer. You can use any other transformer. The result is very satisfactory

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00:00 circuit description
02:05 Why do we need an oscillator circuit?
05:30 oscillator circuit drawing for 220V power inverter
10:37 Viewing the waveform and frequency of the oscillator circuit